The Pledge of Allegiance is a promise or oath of allegiance to the United States and to its national flag. It is commonly recited in unison at public events, and especially in public school classrooms, where the Pledge is often a morning ritual. In its present form, the words of the Pledge are codified in Title 4 of the United States Code §4:

The Pledge of Allegiance to the Flag: "I pledge allegiance to the Flag of the United States of America, and to the Republic for which it stands, one Nation under God, indivisible, with liberty and justice for all.", should be rendered by standing at attention facing the flag with the right hand over the heart. When not in uniform men should remove any non-religious headdress with their right hand and hold it at the left shoulder, the hand being over the heart. Persons in uniform should remain silent, face the flag, and stand at the position of attention.

Some U.S. states, such as Texas, also have pledges of allegiance to their state flags (see Flag of Texas).